//
//  MainTabBar.swift
//  SinaWeibo
//
//  Created by 张洪毓 on 15/11/8.
//  Copyright © 2015年 张洪毓. All rights reserved.
//

import UIKit

class MainTabBar: UITabBar {


    override init(frame: CGRect) {
        super.init(frame: frame)
        setupUI()
    }

    required init?(coder aDecoder: NSCoder) {
//        fatalError("init(coder:) has not been implemented")
        super.init(coder: aDecoder)
        setupUI()
    }
    
    private func setupUI(){
        addSubview(composeBtn)
    }
    
    
    override func layoutSubviews() {
        
        super.layoutSubviews()
        
        let w = self.bounds.width / 5
        let h = self.bounds.height
        let rect = CGRectMake(0, 0, w, h)
        
        var index: CGFloat = 0
        for subview in subviews {
            
            if subview.isKindOfClass(NSClassFromString("UITabBarButton")!) {
                
                subview.frame = CGRectOffset(rect, w * index, 0)
                index += index == 1 ? 2 : 1
            }
        }
        
        composeBtn.frame = CGRectOffset(rect, w * 2, 0)
        bringSubviewToFront(composeBtn)
    }
    
    
     lazy var composeBtn: UIButton = {
        
        let btn = UIButton()
        btn.setBackgroundImage(UIImage(named: "tabbar_compose_button"), forState: UIControlState.Normal)
        btn.setBackgroundImage(UIImage(named: "tabbar_compose_button_highlighted"), forState: UIControlState.Highlighted)
        btn.setImage(UIImage(named: "tabbar_compose_icon_add"), forState: UIControlState.Normal)
        btn.setImage(UIImage(named: "tabbar_compose_icon_add_highlighted"), forState: UIControlState.Highlighted)
        return btn
    }()
    
    
    
    
    
    
    
}
